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답안 #1020211

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
1020211 2024-07-11T17:11:32 Z cpptowin Power Plant (JOI20_power) C++17
100 / 100
 125 ms 49748 KB 
#include<bits/stdc++.h>
#define fo(i,l,r) for(int i = l ; i <= r ; i ++)
#define fod(i,r,l) for(int i = r ; i >= l ; i--)
#define pb emplace_back
#define int long long
#define maxn 1000010
#define N 1010
#define inf (int)1e18
#define bitcount(x) __builtint_popcount(x)
#define bit(x,i) ((x >> i) & 1)
#define onbit(x,i) (x | (1ll << i))
#define offbit(x,i) (x ^ (1ll << i))
#define lb(x) x & -x
#define all(x) x.begin(),x.end()
#define ss(x) (int)x.size()
#define en cout << "\n";
#define vi vector<int>
#define pii pair<int,int>
#define vii vector<pii>
using namespace std;
bool maximize(int &a,int b)
{
    if(a <= b)
    {
        a = b;
        return 1;
    }
    return 0;
}
bool minimize(int &a,int b)
{
    if(a >= b)
    {
        a = b;
        return 1;
    }
    return 0;
}
int n,a[maxn],f[maxn];
vi ke[maxn];
int ans = 0;
void dfs(int u,int par = 0)
{
    int sum = 0,maxx = 0;
    for(int v : ke[u]) if(v != par)
    {
        dfs(v,u);
        maximize(maxx,f[v]);
        sum += f[v];
    }
    if(a[u])
    {
        maximize(ans,maxx + 1);
        maximize(ans,sum - 1);
    }
    else maximize(ans,sum);
    f[u] = max(a[u],sum - a[u]);
}
main()
{
#define name "TASK"
    if(fopen(name".inp","r"))
    {
        freopen(name".inp","r",stdin);
        freopen(name".out","w",stdout);
    }
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    cin >> n;
    fo(i,1,n - 1)
    {
        int u,v;
        cin >> u >> v;
        ke[u].pb(v);
        ke[v].pb(u);
    }
    fo(i,1,n)
    {
        char t;
        cin >> t;
        a[i] = t - '0';
    }
    dfs(1);
    cout << ans;
}

Compilation message

power.cpp:59:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   59 | main()
      | ^~~~
power.cpp: In function 'int main()':
power.cpp:64:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   64 |         freopen(name".inp","r",stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~
power.cpp:65:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   65 |         freopen(name".out","w",stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
6.0 / 6.0

# 결과 실행 시간 메모리 Grader output
1 Correct 12 ms 23900 KB Output is correct
2 Correct 12 ms 23900 KB Output is correct
3 Correct 12 ms 23880 KB Output is correct
4 Correct 13 ms 23812 KB Output is correct
5 Correct 11 ms 23772 KB Output is correct
6 Correct 14 ms 23796 KB Output is correct
7 Correct 12 ms 24152 KB Output is correct
8 Correct 12 ms 23900 KB Output is correct
9 Correct 12 ms 23956 KB Output is correct
10 Correct 11 ms 23944 KB Output is correct
11 Correct 12 ms 23748 KB Output is correct
12 Correct 15 ms 24156 KB Output is correct
13 Correct 13 ms 23792 KB Output is correct
14 Correct 11 ms 23900 KB Output is correct
15 Correct 12 ms 23892 KB Output is correct
16 Correct 11 ms 23900 KB Output is correct
17 Correct 11 ms 23900 KB Output is correct
18 Correct 11 ms 23876 KB Output is correct
19 Correct 11 ms 23896 KB Output is correct
20 Correct 12 ms 23900 KB Output is correct
21 Correct 17 ms 23900 KB Output is correct

Subtask #2
41.0 / 41.0

# 결과 실행 시간 메모리 Grader output
1 Correct 12 ms 23900 KB Output is correct
2 Correct 12 ms 23900 KB Output is correct
3 Correct 12 ms 23880 KB Output is correct
4 Correct 13 ms 23812 KB Output is correct
5 Correct 11 ms 23772 KB Output is correct
6 Correct 14 ms 23796 KB Output is correct
7 Correct 12 ms 24152 KB Output is correct
8 Correct 12 ms 23900 KB Output is correct
9 Correct 12 ms 23956 KB Output is correct
10 Correct 11 ms 23944 KB Output is correct
11 Correct 12 ms 23748 KB Output is correct
12 Correct 15 ms 24156 KB Output is correct
13 Correct 13 ms 23792 KB Output is correct
14 Correct 11 ms 23900 KB Output is correct
15 Correct 12 ms 23892 KB Output is correct
16 Correct 11 ms 23900 KB Output is correct
17 Correct 11 ms 23900 KB Output is correct
18 Correct 11 ms 23876 KB Output is correct
19 Correct 11 ms 23896 KB Output is correct
20 Correct 12 ms 23900 KB Output is correct
21 Correct 17 ms 23900 KB Output is correct
22 Correct 13 ms 23900 KB Output is correct
23 Correct 12 ms 23900 KB Output is correct
24 Correct 11 ms 23900 KB Output is correct
25 Correct 13 ms 24088 KB Output is correct
26 Correct 14 ms 23904 KB Output is correct
27 Correct 13 ms 23900 KB Output is correct
28 Correct 11 ms 24080 KB Output is correct
29 Correct 12 ms 23968 KB Output is correct
30 Correct 12 ms 24156 KB Output is correct
31 Correct 11 ms 24044 KB Output is correct
32 Correct 11 ms 24052 KB Output is correct
33 Correct 12 ms 23900 KB Output is correct
34 Correct 12 ms 23900 KB Output is correct
35 Correct 12 ms 23896 KB Output is correct
36 Correct 12 ms 23916 KB Output is correct
37 Correct 13 ms 24156 KB Output is correct
38 Correct 17 ms 24048 KB Output is correct
39 Correct 11 ms 23896 KB Output is correct
40 Correct 15 ms 23884 KB Output is correct
41 Correct 13 ms 23900 KB Output is correct
42 Correct 13 ms 23900 KB Output is correct
43 Correct 12 ms 23900 KB Output is correct
44 Correct 12 ms 23900 KB Output is correct
45 Correct 12 ms 23900 KB Output is correct
46 Correct 12 ms 23900 KB Output is correct
47 Correct 13 ms 23900 KB Output is correct
48 Correct 12 ms 24032 KB Output is correct
49 Correct 11 ms 24156 KB Output is correct
50 Correct 14 ms 24124 KB Output is correct
51 Correct 10 ms 24028 KB Output is correct
52 Correct 11 ms 23904 KB Output is correct
53 Correct 12 ms 23896 KB Output is correct
54 Correct 12 ms 24108 KB Output is correct
55 Correct 11 ms 23900 KB Output is correct
56 Correct 11 ms 23900 KB Output is correct
57 Correct 12 ms 23960 KB Output is correct
58 Correct 12 ms 24088 KB Output is correct
59 Correct 12 ms 24092 KB Output is correct
60 Correct 11 ms 23996 KB Output is correct
61 Correct 14 ms 23900 KB Output is correct
62 Correct 13 ms 24156 KB Output is correct
63 Correct 12 ms 23900 KB Output is correct

Subtask #3
53.0 / 53.0

# 결과 실행 시간 메모리 Grader output
1 Correct 12 ms 23900 KB Output is correct
2 Correct 12 ms 23900 KB Output is correct
3 Correct 12 ms 23880 KB Output is correct
4 Correct 13 ms 23812 KB Output is correct
5 Correct 11 ms 23772 KB Output is correct
6 Correct 14 ms 23796 KB Output is correct
7 Correct 12 ms 24152 KB Output is correct
8 Correct 12 ms 23900 KB Output is correct
9 Correct 12 ms 23956 KB Output is correct
10 Correct 11 ms 23944 KB Output is correct
11 Correct 12 ms 23748 KB Output is correct
12 Correct 15 ms 24156 KB Output is correct
13 Correct 13 ms 23792 KB Output is correct
14 Correct 11 ms 23900 KB Output is correct
15 Correct 12 ms 23892 KB Output is correct
16 Correct 11 ms 23900 KB Output is correct
17 Correct 11 ms 23900 KB Output is correct
18 Correct 11 ms 23876 KB Output is correct
19 Correct 11 ms 23896 KB Output is correct
20 Correct 12 ms 23900 KB Output is correct
21 Correct 17 ms 23900 KB Output is correct
22 Correct 13 ms 23900 KB Output is correct
23 Correct 12 ms 23900 KB Output is correct
24 Correct 11 ms 23900 KB Output is correct
25 Correct 13 ms 24088 KB Output is correct
26 Correct 14 ms 23904 KB Output is correct
27 Correct 13 ms 23900 KB Output is correct
28 Correct 11 ms 24080 KB Output is correct
29 Correct 12 ms 23968 KB Output is correct
30 Correct 12 ms 24156 KB Output is correct
31 Correct 11 ms 24044 KB Output is correct
32 Correct 11 ms 24052 KB Output is correct
33 Correct 12 ms 23900 KB Output is correct
34 Correct 12 ms 23900 KB Output is correct
35 Correct 12 ms 23896 KB Output is correct
36 Correct 12 ms 23916 KB Output is correct
37 Correct 13 ms 24156 KB Output is correct
38 Correct 17 ms 24048 KB Output is correct
39 Correct 11 ms 23896 KB Output is correct
40 Correct 15 ms 23884 KB Output is correct
41 Correct 13 ms 23900 KB Output is correct
42 Correct 13 ms 23900 KB Output is correct
43 Correct 12 ms 23900 KB Output is correct
44 Correct 12 ms 23900 KB Output is correct
45 Correct 12 ms 23900 KB Output is correct
46 Correct 12 ms 23900 KB Output is correct
47 Correct 13 ms 23900 KB Output is correct
48 Correct 12 ms 24032 KB Output is correct
49 Correct 11 ms 24156 KB Output is correct
50 Correct 14 ms 24124 KB Output is correct
51 Correct 10 ms 24028 KB Output is correct
52 Correct 11 ms 23904 KB Output is correct
53 Correct 12 ms 23896 KB Output is correct
54 Correct 12 ms 24108 KB Output is correct
55 Correct 11 ms 23900 KB Output is correct
56 Correct 11 ms 23900 KB Output is correct
57 Correct 12 ms 23960 KB Output is correct
58 Correct 12 ms 24088 KB Output is correct
59 Correct 12 ms 24092 KB Output is correct
60 Correct 11 ms 23996 KB Output is correct
61 Correct 14 ms 23900 KB Output is correct
62 Correct 13 ms 24156 KB Output is correct
63 Correct 12 ms 23900 KB Output is correct
64 Correct 88 ms 37004 KB Output is correct
65 Correct 83 ms 36948 KB Output is correct
66 Correct 82 ms 36948 KB Output is correct
67 Correct 95 ms 37004 KB Output is correct
68 Correct 85 ms 37120 KB Output is correct
69 Correct 88 ms 36944 KB Output is correct
70 Correct 75 ms 36948 KB Output is correct
71 Correct 102 ms 37132 KB Output is correct
72 Correct 96 ms 36940 KB Output is correct
73 Correct 99 ms 48748 KB Output is correct
74 Correct 95 ms 48464 KB Output is correct
75 Correct 96 ms 38220 KB Output is correct
76 Correct 121 ms 38248 KB Output is correct
77 Correct 85 ms 36944 KB Output is correct
78 Correct 105 ms 36988 KB Output is correct
79 Correct 92 ms 37100 KB Output is correct
80 Correct 108 ms 36880 KB Output is correct
81 Correct 80 ms 37064 KB Output is correct
82 Correct 105 ms 36812 KB Output is correct
83 Correct 80 ms 42064 KB Output is correct
84 Correct 88 ms 44280 KB Output is correct
85 Correct 125 ms 43864 KB Output is correct
86 Correct 85 ms 38484 KB Output is correct
87 Correct 102 ms 37672 KB Output is correct
88 Correct 83 ms 37968 KB Output is correct
89 Correct 98 ms 37908 KB Output is correct
90 Correct 96 ms 37612 KB Output is correct
91 Correct 81 ms 37968 KB Output is correct
92 Correct 79 ms 38304 KB Output is correct
93 Correct 74 ms 40484 KB Output is correct
94 Correct 80 ms 41992 KB Output is correct
95 Correct 73 ms 40820 KB Output is correct
96 Correct 74 ms 39196 KB Output is correct
97 Correct 82 ms 37712 KB Output is correct
98 Correct 71 ms 37092 KB Output is correct
99 Correct 92 ms 36988 KB Output is correct
100 Correct 75 ms 40272 KB Output is correct
101 Correct 82 ms 37948 KB Output is correct
102 Correct 77 ms 37200 KB Output is correct
103 Correct 84 ms 37200 KB Output is correct
104 Correct 57 ms 37568 KB Output is correct
105 Correct 86 ms 45396 KB Output is correct
106 Correct 56 ms 37312 KB Output is correct
107 Correct 56 ms 37316 KB Output is correct
108 Correct 89 ms 49352 KB Output is correct
109 Correct 72 ms 37572 KB Output is correct
110 Correct 87 ms 49748 KB Output is correct
111 Correct 70 ms 37080 KB Output is correct